यदि $\sec ^{-1} \frac{x}{a}-\sec ^{-1} \frac{x}{b}=\sec ^{-1} b-\sec ^{-1} a$ है,तो $x$ का मान ज्ञात कीजिए।

  • A
    $a b$
  • B
    $-a b$
  • C
    $a^2$
  • D
    $b^2$

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यदि $\sin ^{-1}\left(\frac{3}{5}\right)+\cos ^{-1}\left(\frac{12}{13}\right)=\sin ^{-1} \alpha$ है,तो $\alpha=$

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$x$ के मानों का समुच्चय ज्ञात कीजिए जिसके लिए $\tan ^{-1}\left(\frac{x}{x-2}\right)-\tan ^{-1}\left(\frac{x}{2 x-1}\right)=\tan ^{-1}\left(\frac{2}{3}\right)$ है।

यदि $\cot^{-1}[(\cos \alpha)^{1/2}] - \tan^{-1}[(\cos \alpha)^{1/2}] = x$ है,तो $\sin x = $

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